Magnetic field generation in fully convective rotating spheres
arXiv:astro-ph/0410645 · doi:10.1086/498634
Abstract
Magnetohydrodynamic simulations of fully convective, rotating spheres with volume heating near the center and cooling at the surface are presented. The dynamo-generated magnetic field saturates at equipartition field strength near the surface. In the interior, the field is dominated by small-scale structures, but outside the sphere by the global scale. Azimuthal averages of the field reveal a large-scale field of smaller amplitude also inside the star. The internal angular velocity shows some tendency to be constant along cylinders and is ``anti-solar'' (fastest at the poles and slowest at the equator).
12 pages, 11 figures, 2 tables, to appear in the 10 Feb issue of ApJ